庐山土壤有机质垂直分布特征及其与氮、磷、钾含量的关系

Vertical distribution of soil organic matter and its relationship with nitrogen,phosphorus and potassium content in Mountain Lu

测定了江西省庐山不同海拔的3种土壤(山地红壤、山地黄壤、山地棕壤)不同层次的有机质、全氮、速效磷、速效钾含量,旨在了解影响各养分含量的因素。结果表明,庐山土壤养分含量主要受气候、水分、温度及植被的影响,具有明显的垂直地带性,有机质含量随海拔的升高而增加;土壤有机质含量与全氮和速效钾含量呈正相关,与速效磷含量无明显相关性;土壤各养分除速效磷外整体含量较高。

Samples of three types soil (mountain red soil, mountain yellow soil, mountain brown soil) at different altitude in Mountain Lu was collected, and organic matter, total N, available P and available K of different levels soil were analyzed in order to understand the factors affecting soil nutrient content. The results show that the soil nutrient content in Mountain Lu is mainly affected by climate, water, temperature and vegetation, and has obvious vertical distribution. As the altitude rose, organic matter content increased. The content of soil organic matter was positively correlated with the contents of total nitrogen and available potassium, but had no significant correlation with the content of available phosphorus. The total contents of soil nutrients except available phosphorus were high.